These
regulations shall encourage the most appropriate use of land in accordance
with a comprehensive zoning plan in order to lessen congestion in
the streets; to secure safety from fire, panic, flood and other dangers;
to promote public health and the general welfare; to provide adequate
light and air; to prevent the overcrowding of land; to avoid undue
concentration of population; and to facilitate the adequate provision
of transportation, water, sewage disposal, schools, parks and other
public requirements.